WO2009089971A1 - Filet pour aquaculture présentant diverses densités massiques - Google Patents

Filet pour aquaculture présentant diverses densités massiques Download PDF

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Publication number
WO2009089971A1
WO2009089971A1 PCT/EP2008/067325 EP2008067325W WO2009089971A1 WO 2009089971 A1 WO2009089971 A1 WO 2009089971A1 EP 2008067325 W EP2008067325 W EP 2008067325W WO 2009089971 A1 WO2009089971 A1 WO 2009089971A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
aquaculture net
net
wires
aquaculture
Prior art date
Application number
PCT/EP2008/067325
Other languages
English (en)
Inventor
Guillermo Alejan Vidal Rudloff
Hector Paredes Montecinos
Original Assignee
Nv Bekaert Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nv Bekaert Sa filed Critical Nv Bekaert Sa
Priority to AU2008347376A priority Critical patent/AU2008347376B2/en
Priority to CA2708873A priority patent/CA2708873C/fr
Priority to ES08870865T priority patent/ES2426768T3/es
Priority to US12/863,110 priority patent/US8210125B2/en
Priority to EP08870865.6A priority patent/EP2230898B1/fr
Priority to JP2010542553A priority patent/JP5548619B2/ja
Priority to DK08870865.6T priority patent/DK2230898T3/da
Priority to CN200880124989XA priority patent/CN101909434B/zh
Publication of WO2009089971A1 publication Critical patent/WO2009089971A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00—Culture of aquatic animals
    • A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81—Aquaculture, e.g. of fish

Definitions

  • the invention relates to an aquaculture net with a prolonged life time.
  • Aquaculture nets or fish-farming nets are used to raise aquatic life such as fish.
  • the aquaculture net keeps the aquatic life controlled and contained and protects the aquatic life inside the net against predators such as sharks and sea wolfs.
  • the dimensions of such an aquaculture net are considerable.
  • An example of a typical dimension is 30m x 30m x 15m, the last dimension being the depth of the net inside the water and the first two dimensions being the width and length of the net at the water surface.
  • the net may be formed of a polymer wire or of a coated steel wire.
  • a net made of galvanized steel wire and of the above-mentioned dimensions has a weight above 4 metric Tonnes.
  • the aquaculture nets are usually of the chain-link fence type. This is a fence of steel wires woven into a diamond pattern. The meshes have a dimension that is smaller than the dimension of the fish contained in the nets. Each steel wire is preformed by bending so that it exhibits a wavy pattern with maxima and minima. The maxima of a steel wire interlock with the minima of a neighbouring wire to form the patterns of a series of diamonds.
  • Aquaculture nets of the chain-link fence type have proven to be successful to control the aquatic life and to protect against predators.
  • Aquaculture nets with galvanized steel wires offer an acceptable resistance against bio- fouling, i.e. against fouling material that may grow on the mesh structure.
  • fouling material refer to fouling organisms such as barnacles, algae or molluscs, which may attach and grow to the wire material of the mesh structure. This fouling mechanism is so persistent that entire openings in the meshes may be filled blocking any introduction of fresh water or nutrition into the volume inside the mesh structure.
  • the solution provided by the present invention is based on the following principle.
  • an aquaculture net which is divided into at least two parts, a lower part and an upper part.
  • the lower part has a density of weight that is lower than the density of weight of the upper part thus resulting in a difference in density of weight.
  • the bottom or lower part of the net is defined as that part of the net deepest in the water; the top or upper part of the net is that part of the net closest to the water level.
  • the difference in density of weight can be realized in various ways.
  • the lower parts of the net may have openings which are greater than the openings in the upper parts of the net, although still being smaller than the dimensions of the fish.
  • the lower parts of the net may have wires which have a smaller weight than the weight of the wires in the upper parts.
  • the wire is lighter in weight due to a smaller diameter of the wire. As such an aquaculture net is provided wherein the diameter of said wires are smaller towards the bottom of the net than those at the top of the net.
  • the aquaculture net may be a chain-link fence.
  • the aquaculture net is preferably divided into sections having steel wires of lighter weight for sections arranged more towards the bottom of the net.
  • the sections are preferably arranged horizontally, i.e. parallel to the water level.
  • the aquaculture net comprises three parts. These parts are arranged horizontally. There is a lower part, an intermediate part and an upper part.
  • the lower part has a density of weight that is lower than the density of weight of the intermediate part.
  • the intermediate part has a density of weight that is lower than the density of weight of the upper part.
  • the wires are steel wires.
  • the steel wires usually have a wire diameter that is smaller than 3.0 mm.
  • the lower part may have steel wires with a diameter smaller than 1.80 mm.
  • the intermediate part may have steel wires with a diameter ranging from 1.70 mm to 2.0 mm.
  • the upper part may have steel wires with a diameter greater than 1.90 mm.
  • the parts or sections all have the same size or height.
  • the parts may have a different size or height.
  • the height of the lower parts may be greater than the height of the parts above, hereby reducing the weight of the lower parts.
  • the height of the upper parts may be greater than that of the parts below it, hereby increasing the strength of the upper parts or their ability to carry more weight.
  • the invention works for many embodiments by combining the diameter of the wire with the height of a part or section to define a weight per section.
  • the aquaculture net according to the invention preferably has the shape of a square or rectangular box, but may also be shaped as a cone, as a sphere, or any other shape, comprising sections of different diameter of the wire and different height of the parts or sections.
  • said aquaculture net has dimensions which are greater than 1 m x 1 m x 1 m (length x width x depth).
  • Figure 1 and 2 each show an upper view of an installed aquaculture net
  • Figure 3 shows a side view of an installed aquaculture net according to the present invention.
  • Figure 4 shows a side view of a chain-link fence aquaculture net according to the present invention.
  • the net can be made of a polymer, such as polyethylene, polyester or polyamide.
  • the net is preferably made of a chain-link fence of metal wires, e.g. steel wires where the steel wires are provided with a corrosion- resistant coating and/or an antifouling coating.
  • Other suited metal wires are made of copper alloy or titanium.
  • Figure 1 illustrates a square embodiment of a raft 10 for an aquaculture net as described by the present invention.
  • the raft 10 comprises various galvanized steel bars 22 supported by HDPE floating devices.
  • a platform 24 is connected thereto. People can walk around on the platform 24.
  • the aquaculture net can be directly connected to the steel bars 22 by means of ropes or wires.
  • FIG. 2 illustrates a circular embodiment of a raft 20 for an aquaculture net as described by the present invention.
  • a circular raft may be made from HDPE tubes connected to one another by means of brackets.
  • a platform 24 is connected thereto.
  • the aquaculture net can be suspended directly at the raft.
  • the bottom of the aquaculture net may still have the shape of a rectangle or square whereby the upper side takes a form close to a circle (more precisely, the form of a polygon).
  • FIG 3 illustrates a side view of an embodiment of an installed aquaculture net 30 according to the present invention.
  • the floating support 10 is of the square type as illustrated in Figure 1.
  • the aquaculture net 30 is connected to the tubes 22 by means wires or ropes (not shown).
  • the net comprises three sections each having a wire of different diameter.
  • the upper or top section 32 has a wire with a diameter of about 2.10 mm; the wire of the middle or intermediate section 34 has a diameter of about 1.80 mm; the wire of the lower or bottom section, deepest in the water, has a diameter of about 1.60 mm.
  • the height of the three sections 32, 34 and 36 is the same.
  • the various sections 32, 34, 36 can be connected to one another in various ways, e.g. means of a spiralling steel wire going through the side openings of the neighbouring sections, e.g. by means of a metal rope going through the side openings of the neighbouring sections or e.g. by means of pieces of binding wire.
  • the various sections do not form separate parts but are part of one continuous woven chain link fence.
  • Figure 4 shows an alternative embodiment of a side view of a chain-link fence aquaculture net according to the present invention.
  • the aquaculture net is directly connected to the tubes 22.
  • the first top wire 42 of the chain-link fence is made of the largest diameter to be able to carry most weight and to strengthen the attachment to the floating raft.
  • the wires 42 and below have a smaller diameter.
  • the wires 46 have a yet smaller diameter. This may be repeated for wires below such that they have a further smaller diameter than the wires above.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Zoology (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Farming Of Fish And Shellfish (AREA)

Abstract

La présente invention concerne un filet pour aquaculture (30) comprenant des fils (32, 34, 36) d'une masse ou d'un diamètre inférieur dans sa partie basse. Cela a pour avantage l'allongement de la durée de vie de ce filet pour aquaculture.
PCT/EP2008/067325 2008-01-18 2008-12-11 Filet pour aquaculture présentant diverses densités massiques WO2009089971A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
AU2008347376A AU2008347376B2 (en) 2008-01-18 2008-12-11 Aquaculture net with different densities of weight
CA2708873A CA2708873C (fr) 2008-01-18 2008-12-11 Filet pour aquaculture presentant diverses densites massiques
ES08870865T ES2426768T3 (es) 2008-01-18 2008-12-11 Red de acuicultura con diferentes densidades de peso
US12/863,110 US8210125B2 (en) 2008-01-18 2008-12-11 Aquaculture net with different densities of weight
EP08870865.6A EP2230898B1 (fr) 2008-01-18 2008-12-11 Filet pour aquaculture présentant diverses densités massiques
JP2010542553A JP5548619B2 (ja) 2008-01-18 2008-12-11 異なる重量密度を有する水産養殖網
DK08870865.6T DK2230898T3 (da) 2008-01-18 2008-12-11 Havbrugsnet med forskellige vægtfylder
CN200880124989XA CN101909434B (zh) 2008-01-18 2008-12-11 一种具有不同质量密度的水产养殖网

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08150401.1 2008-01-18
EP08150401 2008-01-18

Publications (1)

Publication Number Publication Date
WO2009089971A1 true WO2009089971A1 (fr) 2009-07-23

Family

ID=39562118

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/067325 WO2009089971A1 (fr) 2008-01-18 2008-12-11 Filet pour aquaculture présentant diverses densités massiques

Country Status (10)

Country Link
US (1) US8210125B2 (fr)
EP (1) EP2230898B1 (fr)
JP (1) JP5548619B2 (fr)
CN (1) CN101909434B (fr)
AU (1) AU2008347376B2 (fr)
CA (1) CA2708873C (fr)
CL (1) CL2009000100A1 (fr)
DK (1) DK2230898T3 (fr)
ES (1) ES2426768T3 (fr)
WO (1) WO2009089971A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014056980A1 (fr) * 2012-10-11 2014-04-17 Dsm Ip Assets B.V. Enclos d'aquaculture
WO2018224429A1 (fr) 2017-06-08 2018-12-13 Nv Bekaert Sa Module d'aquaculture doté d'une grille de corde

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8302564B2 (en) * 2008-03-19 2012-11-06 Nv Bekaert Sa Aquaculture net with polygonal bottom
CH699799B1 (de) * 2008-10-28 2018-06-29 Geobrugg Ag Netz, insbesondere für einen Korb für Fischzucht, für Abbremsvorgänge im Naturgefahrenbereich, als Abdeckung in der Sicherheitstechnik und/oder für Splitterschutz sowie ein Verfahren zu dessen Herstellung.
CA2845908A1 (fr) * 2011-10-13 2013-04-18 Nv Bekaert Sa Filet d'aquaculture a maille inferieure isotrope
MX2014002467A (es) * 2011-10-13 2014-03-27 Bekaert Sa Nv Red de acuicultura con paredes con diferente direccion de alambre.
CN105432512A (zh) * 2014-09-01 2016-03-30 耿泽平 应用于海参养殖的防护网
BR112017019375A2 (pt) * 2015-03-12 2018-06-05 Deutsche Telekom Ag dispositivo de fechadura e travamento
KR101835016B1 (ko) * 2017-12-27 2018-03-06 한국통산주식회사 선망 어업에 사용되는 그물 조립체
US11096380B2 (en) * 2017-12-28 2021-08-24 Ketcham Supply Co., Inc. Method for aquaculture
GR20200100101A (el) * 2020-02-25 2021-09-15 Σπυρονικολαος Κωνσταντινου Μπαζιγος Πλεγμα με παρενθετους αξονες για τη δημιουργια κλωβων ιχθυοκαλλιεργειας

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001190178A (ja) * 2000-01-12 2001-07-17 Ashimori Ind Co Ltd 生け簀
JP2004305174A (ja) * 2003-04-10 2004-11-04 Kobe Steel Ltd 養殖用生け簀
WO2006137128A1 (fr) * 2005-06-21 2006-12-28 Ashimori Industry Co., Ltd. Chalut

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Publication number Priority date Publication date Assignee Title
US5967086A (en) * 1997-11-06 1999-10-19 Knott, Sr.; James M. Aquaculture method and apparatus
JP2000308432A (ja) * 1999-04-28 2000-11-07 Ashimori Ind Co Ltd 防食を施した銅または銅合金製海中構造物、及び銅または銅合金製海中構造物の防食方法
JP2001190179A (ja) * 2000-01-12 2001-07-17 Ashimori Ind Co Ltd 生け簀
CN2562578Y (zh) * 2002-07-02 2003-07-30 鲍和平 全自动网箱养鱼成套设备
CN2617156Y (zh) * 2003-05-05 2004-05-26 中国海洋大学 可控沉式养殖网箱
CN2860090Y (zh) * 2006-01-11 2007-01-24 金丽新 重叠单层刺渔网
US8302564B2 (en) 2008-03-19 2012-11-06 Nv Bekaert Sa Aquaculture net with polygonal bottom

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001190178A (ja) * 2000-01-12 2001-07-17 Ashimori Ind Co Ltd 生け簀
JP2004305174A (ja) * 2003-04-10 2004-11-04 Kobe Steel Ltd 養殖用生け簀
WO2006137128A1 (fr) * 2005-06-21 2006-12-28 Ashimori Industry Co., Ltd. Chalut

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 200474, Derwent World Patents Index; AN 2004-752717, XP002486980 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014056980A1 (fr) * 2012-10-11 2014-04-17 Dsm Ip Assets B.V. Enclos d'aquaculture
CN104703470A (zh) * 2012-10-11 2015-06-10 帝斯曼知识产权资产管理有限公司 水产养殖围栏
WO2018224429A1 (fr) 2017-06-08 2018-12-13 Nv Bekaert Sa Module d'aquaculture doté d'une grille de corde

Also Published As

Publication number Publication date
AU2008347376B2 (en) 2013-01-17
EP2230898B1 (fr) 2013-06-05
CA2708873A1 (fr) 2009-07-23
ES2426768T3 (es) 2013-10-25
CN101909434B (zh) 2013-10-16
EP2230898A1 (fr) 2010-09-29
CN101909434A (zh) 2010-12-08
CA2708873C (fr) 2016-08-02
AU2008347376A1 (en) 2009-07-23
US8210125B2 (en) 2012-07-03
US20110048331A1 (en) 2011-03-03
JP2011509665A (ja) 2011-03-31
JP5548619B2 (ja) 2014-07-16
CL2009000100A1 (es) 2009-10-23
DK2230898T3 (da) 2013-08-26

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